1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
diamong [38]
4 years ago
5

A student is investigating the affect of different salts on melting points. Four patches of ice of equal size are roped off and

a different
type of salt is poured on each one receives table salt (NaCl), one receives Calcium Chloride (CaCl2), one receives Potassium
Carbonate (KCO3) and the fourth receives Inert sand instead. Each patch receives an equal amount of salt or sand. The student
measures the volume of ice remaining and subtracts it from the original volume of ice to see how much melted away. What is the
dependent variable?
•
A. The type of salt applied to the ice.
B. The amount of lee that melted.
C. The ice that received sand.
D. The size of the Ice patches
Biology
1 answer:
d1i1m1o1n [39]4 years ago
4 0

Answer:

B. The amount of lee that melted.

Explanation:

The dependent variable is more of what results from an action during an experiment. It is actually what is being tested for. In the experiment, the scientist seeks to understand the effect of salts on melting point of ice. He selects the different salts which can cause a ice to melt (independent variables) then he sets up to find out the effect of the salt on the ice.

He cannot control how much ice will melt. The properties of the salts would determine the extent and rate of the dissolution of the ice pack. This is the dependent variable which relies on the nature of the salt.

You might be interested in
What are the primary methods of confirming endotracheal tube placement within the trachea?.
krek1111 [17]

Given what we know, we can confirm that the primary method of confirming endotracheal tube placement within the trachea is a chest x-ray.

<h3>Why use an X-ray?</h3>

A chest x-ray of the patient will be the most secure way of confirming the placement of an endotracheal tube within the trachea given that it allows the professionals in question to see its exact placement. This ensures that the placement is correct and that the patient will not have respiratory issues.

Therefore, we can confirm that the primary method most often used for confirming endotracheal tube placement within the trachea is a chest x-ray.

To learn more about x-rays visit:

brainly.com/question/2833441?referrer=searchResults

7 0
2 years ago
________ is any functional structure within the confines of a cell; literally a. Small organ; it usually has a membrane-based st
olasank [31]

Answer:

Cell organelle

Explanation:

The cell organelle is the small organ-like structure present inside the cell in the cytoplasm.

Different types of cell organelles are present in the cell which performs specific functions like of storage, of digestion of biomolecules like lysosomes, of protein synthesis and many others.

The organelles are usually enclosed by either a single phospholipid membrane like in lysosomes, Golgi apparatus or two lipid layers like in nucleus and chloroplast.

Thus, cell organelle is the correct answer.

6 0
3 years ago
¿Como se llaman las celulas segun el organo en el que estan?
worty [1.4K]

Answer:

es tejido ... 2 ... es la ... opción correcta ...

Un grupo de células que tienen un origen común, una estructura similar y que realizan una función definida se denomina tejido. ... Por ejemplo, grupos de células óseas forman tejidos óseos y las células musculares forman tejido muscular. espero que te ayude

3 0
3 years ago
Which is the process used by the cell to rid itself of unwanted, large substances?
Dmitrij [34]

Answer:

Exocytosis is the reverse of endocytosis. Quatities of material are expelled from the cell without ever passing through the membrane as individual molecules. By using the processes of endocytosis and exocytosis, some specialized types of cells move large amounts of bulk material into and out of themselves.

Explanation:

6 0
3 years ago
Which population would be least likely to survive a change in its ecosystem?
Burka [1]

Answer: D

Explanation:

lIf the change in the ecosystem occurs, then it would effect the weather, temperature, and the abiotic factors. So, we can see that the bacteria could survive in any sort of temperature. So, A can't be it. Also, B can't be it because the grass can grow in any sort of soil, even if the soil is contaminated. C cant be it because even if the change in the envoriment (temperature, contaimination) kills of one of the brown bear's food source, they can still have other things they can eat. But, if the weather gets too hot or the soil gets contaimnated and kills off the ecalyptus plants, the koala has nothing  else to eat. So, best answer is D.

8 0
3 years ago
Other questions:
  • In the living world, there is a great deal of genetic variation. The genetic information of dogs differs from the genetic inform
    14·2 answers
  • TRUE OR FALSE
    7·1 answer
  • Can you grow plants without soil? Explain. Write more about those methods. How will plants get nutrients for their growth?
    14·1 answer
  • Staci has antibody a in her blood with no rh antibody. what blood type does she have?
    12·1 answer
  • What is stimuli in biology in terms of igcse ????​
    7·2 answers
  • In one family, all three children are homozygous for a recessive gene. What can be concluded about the parents?
    12·1 answer
  • What occurs in the Krebs cycle
    8·1 answer
  • Testes
    10·1 answer
  • Do large muscles occur naturally in some other living things? (List the living things and explain why you think these larger mus
    15·1 answer
  • Assertion (A): Mutations can be passed on to the offspring.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!